Writing material.



UNITEE @TATEfi PATENT @FFIQE.

MARIE F. C. STOCKMANN, OF NEW YORK, N. Y.

WRITING MATERIAL.

No Drawing.

T 0 all whom it may concern:

Be it known that I, MARIE F. C. STOCK- MANN, a citizen of Germany, asubject of the Emperor of Germany, and a resident of New York, countyand State of New York, have invented a certain new and usefulImprovement in Writing Materials, of which the following is aspecification.

My invention relates to improvements in wr ting materials for the blind,and the mam object of my invention is to provide a writing material bymeans of which people deprived of sight may communicate betweenthemselves or with people not deprived of sight, by writing the ordinaryand usual script characters, etc. By using my improved writing materialany one possessed of the ordinary knowledge of writing may be able tocommunicate with the blind by writing and using only the usual scriptcharacters.

My improvements have been described in a prior application of mine,filed January 12, 1909, Serial No. 471,862.

In its preferred form my improved writing material consists of a solidbasic material, a drying material, water, an adhesive material, and acoloring material, so that a rather thick colored fluid material ofcontrasting color with the paper is produced, which, when deposited uponpaper by a suitable pen will quickly dry and leave the characters raisedupon the surface of the paper so that they are readily perceptible tothe touch and the blind may easily read them.

More specifically, the preferred composition of my improved writingmaterial is as follows: One part sugar, one part flour, one part water,one part mucilage and one part black ink. The flour acts as a basicmaterial and the amount of sugar may be varied in order to vary thedrying qualities of the material to different extents. The ink is addedmerely to color the material so that it will be of contrasting color andthe writing may be easily read by those not blind. The mucilage is addedin order to make the material suitably adhesive. It is found that sugarrenders the material somewhat adhesive but not sufficiently so.Furthermore, the addition of mucilage prevents the material fromcracking when dry and allows the paper upon which the writing is made tobe folded or rolled.

Any one possessed of the ordinary knowl- Specification of LettersI'atent.

Application filed. July 30, 1910. Serial No. 574,735.

Patented Mar. 28, i911.

edge of writing may easily write with the material and easily read suchwriting, since 1t appears to the eye much as writing in ordinary inkdoes. The blind may easily read such writing, since the letters are verymaterially raised and very perceptible to the touch and the formsthereof may be readily made out by passing the fingers lightly over thesame.

Writing with my improved material may be read quickly as well by theblind as by those still possessed of sight, who will read it in theordinary manner. My improvements are therefore specially suitable tothose who become blind in later life and who have not specific knowledgeof the methods for writing for the blind which have hereto fore beencommonly used. Such writing which has heretofore been used for the blindis not readable by those who are possessed of sight and read only in theordinary man ner. It will also be evident that my improvements may beused for the purposes described in connection with other markingsbesides letters. For instance, my improved writing material is alsoapplicable to the making of pictures, geometrical figures or otherdrawings to be used by the blind, or other persons in communicating withthem.

My improved writing material is very stable and I have found byexperience that it will keep for a year or more without deteriorating inany way. It will readily flow when a suitable pen is used and drieswithin a few minutes, so that it is specially advantageous for letterwriting. As far as I am aware, I am the first to provide a writingmaterial which, when deposited upon paper in the usual manner, Wlllleave the characters sufliciently raised so that they may be easily readby the blind.

Although I have described my improved material in great detail,nevertheless, I do not desire to be limited to the specific componentsand amounts thereof, since many variations therein may be made wellwithin the spirit and scope of my invention.

Having fully and clearly descrlbed my improvements, what I claim as newand desire to secure by Letters Patent 1s 1. A writing material, havingin combination one part sugar, one part flour, one part water, one partmucilage and one part black ink.

2. A fiuid writing material, having 1n combination sugar, flour, waterand muc1- lage, or their equivalents, substantially as In testimonywhereof, I have signed my described, and a sultable coloring material.name to this speclfication, 1n the presence of 3. A fluid wrltlngmaterial, having 1n two subscribing Witnesses.

combination sugar, flour, Water and muci- MARIE F. C. STOCKMANN. 5 lage,01' their equivalents, the parts being itnesses:

substantially as one to one, and a suitable GoRHAM CROSBY, 1 coloringmaterial. EDWIN SEGER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

